Below is a list of power supplies you will see for sale followed by the companies that actually manufacture them:

A+GPB- Topower

Akasa- Enhance

Antec- ChannelWell

Aopen- FSP Group

Aspire- Youngyear

Athena Power- Topower

Chiefman- Powmax

Chiefmax- Powmax

Chieftec- Sirtec

Coba- ATNG

Coolermaster- AcBel Polytech

Coolink- ATNG

Coolmax- ATNG

Demon- Powmax

Enermax- Enermax

Enlight- Sirtec

EPower- Topower

Fortron- FSP Group (same company)

HighPower- Sirtec (same company)

Hi-Q- FSP Group

Hi-Val- Topower

Logisys- Youngyear

Lead Power- ChannelWell

Mad Dog- Topower

MGE- Youngyear

OCZ- Topower

PCMCIS- Topower

PC Power & Cooling- PCP&C

Powerman- FSP Group

Powmax- Ultra

Raidmax- Topower (XP Series)

Rosewill- ATNG (AP models), Youngyear (RE models)

Silverstone- Enhance

Sparkle- FSP (same company)

Startech- ATNG

SuperFlower- Topower (same company)

Tagan- Topower

Turbolink- ChannelWell

Thermaltake- Sirtec

TTGI- Topower (older ones), Youngyear (newer ones-?)

Turbolink- ChannelWell

Ultra- Wintech, Youngyear (X-connect ?)

Ultra X-Finity- Wintech

Vantec- Topower

XClio- FSP Group

Zalman- FSP Group

Zippy- ?

Disclaimer- this is by no means a comprehensive list and may not even be totally accurate. Many of them have been verified, but there may be variances within a product line. Also, just because the same manufacturer OEM'ed a product for a vendor doesn't necessarily mean that it is the same as a product from a different vendor since a vendor may take the OEM product and upgrade it with better components or they may give the manufacturer a tighter set of specifications.

Below is a list of power supplies you will see for sale followed by the companies that actually manufacture them:

A+GPB- Topower

Akasa- Enhance

Antec- ChannelWell

Aopen- FSP Group

Aspire- Youngyear

Athena Power- Topower

Chiefman- Powmax

Chiefmax- Powmax

Chieftec- Sirtec

Coba- ATNG

Coolermaster- AcBel Polytech

Coolink- ATNG

Coolmax- ATNG

Demon- Powmax

Enermax- ChannelWell (?), Topower (?), Topower (?), Wintech (?)

Enlight- Sirtec

EPower- Topower

Fortron- FSP Group (same company)

HighPower- Sirtec (same company)

Hi-Q- FSP Group

Hi-Val- Topower

Logisys- Youngyear

Lead Power- ChannelWell

Mad Dog- Topower

MGE- Youngyear

OCZ- Topower

PCMCIS- Topower

PC Power & Cooling- FSP Group

Powerman- FSP Group

Powmax- Ultra

Raidmax- Topower (XP Series)

Rosewill- ATNG (AP models), Youngyear (RE models)

Silverstone- Enhance

Sparkle- FSP (same company)

Startech- ATNG

SuperFlower- Topower (same company)

Tagan- Topower

Turbolink- ChannelWell

Thermaltake- Sirtec

TTGI- Topower (older ones), Youngyear (newer ones-?)

Turbolink- ChannelWell

Ultra- Wintech, Youngyear (X-connect ?)

Ultra X-Finity- Wintech

Vantec- Topower

XClio- FSP Group

Zalman- FSP Group

Zippy- ?

Disclaimer- this is by no means a comprehensive list and may not even be totally accurate. Many of them have been verified, but there may be variances within a product line. Also, just because the same manufacturer OEM'ed a product for a vendor doesn't necessarily mean that it is the same as a product from a different vendor since a vendor may take the OEM product and upgrade it with better components or they may give the manufacturer a tighter set of specifications.